Third of their right to george f



J. HALL 8L C. lVI. LANE.

Steam Boiler.

No. 232,121. Patened Sept. 14,1880.

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UNITED STATES PATENT OFFICEO JONATHAN HALL AND C. MARCELLUS LANE, OF KEENE, ASSIGNORS OF ONE- THIRD OF THEIR, RIGHT TO GEORGE F. LANE, OF EAST SVANZEY, N. H.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 232,121, dated September 14, 1880.

Application filed October 1, 1879.

To all whom it may concern:

Be it known that we, JONATHAN HALL and O. MARGELLUS LANE, of Keene, county of Cheshire, State ofNew Hampshire, havejointly invented certain new and useful Improvements in Portable Steam-Boilers; and we do hereby declare that the following is a full, clear, and exact description of our invention, enabling' others skilled in the industry to make and use ro the same, reference being had to the accompanying drawings, forming a part of this specilication, and to the letters and figures of reference marked thereon.

The object of our invention is to provide for I5 portable steanrboilers which can be cheaply constructed and be readily taken apart and repaired, and which are very economical in the use of fuel for generating the required steam.`

In order to describe ourinvention more fully,

2o we refer to the drawings, in which- Figure 1 represents a side view ot' our improved portable steam-boiler. Fig. 2 is a longitudinal section, Fig. 3 a front view, and F1g. 4 a back view, ot' the same. Fig. 5 is a front view of the boiler B, and Fig. 6 a back view of the same.

A is the fire-box, and b is the front, made of cast-iron, and, as may be preferred, bolted or riveted together.

3o In the front bis the door-hole e, covered by a door, d, for the purpose of giving access for cleaning the ilues or tubes in the boiler B. In the front, also, are the openings with the door j', for feeding the grate-bars with fuel.

f is the ash-pitdoor hole, and g is the door for the same. h h represent the grate-bars.

C is the back rest, with side connection pieces, i i, by aid of which the back rest is riveted or bolted to the tire-box A.

4o D isacoinbined smoke-stack base and holder for the back end ofthe steam-boiler B, and is bolted or riveted to the back rest, C, aswell as to the cylindrical cradle or receiver E, which is also bolted or riveted to the front and lirebox.

In the back of the smoke-stack base D is cut a hole, j, which is provided with a door, K, for giving access for cleansing the flues and tubes of the boiler B from the rear also.

The cradle E, as well as the tire-box A, is 5o lined with lire-brick, clay, or cement, so that the fire from the grate 7L may not have i njurious effects ou these parts.

The boiler B proper, in which the steam is generated, is constructed of the cylindrical shell Z, back m, front u, a-nddome 0.

1; andp are lilies or tubes. q is a front division-plate, and ris a back division-plate. This plate is ot' such a form as to throw the tire entirelyint-o the tubes that lie contiguous to the 6o lower half of the periphery of the steam-chest, being extended into the chest on either side at right angles to sides of the boiler, and then curved downward, so as to make a separation between the lower and upper tire-tubes in such a way as to allow the heat and lire to enter thetubes lying immediately inside ofthe boilercase.

s s are lugs riveted to the shell l, and resting` on the top of the cradle E, to which they 7o are bolted.

When a lire is made on the grate-bars It h the heat will rst be communicated to the bottom of the shell l, and will then ascend through the lower tubes, .29, the back division-plate, r, causing the heat-waves to take this course. After passing through the lower tubes, p, the heat will ascend in front through the upper tubes, '19', the front division-plate, q, preventing the heat from reaching the upper part of 8o the boiler in front. From the upper tubes,p, the heat goes into the smoke-stack base D, whence it ascends into the smokestack.

Having thus fully described our invention, we desire to claim- The boiler B and fire-chest A, in combination with the tubes 1J and tubes p', and the divisionplates r and q, the former being of such a shape as to direct the liames into the pipes lying next to the lower half of the boiler-shell, 9o substantially as set forth.

JONATHAN HALL. O. MAROELLUS LANE.

l Witnesses:

E. F. LANE, H. E. LANE. 

